import {
    numberInputToObject,
    rgbaToHex,
    rgbToCmyk,
    rgbToHex,
    rgbToHsl,
    rgbToHsv,
} from './conversion.js';
import {
    names
} from './css-color-names.js';
import {
    inputToRGB
} from './format-input.js';
import {
    bound01,
    boundAlpha,
    clamp01
} from './util.js';
export class TinyColor {
    constructor(color = '', opts = {}) {
        // If input is already a tinycolor, return itself
        if (color instanceof TinyColor) {
            // eslint-disable-next-line no-constructor-return
            return color;
        }
        if (typeof color === 'number') {
            color = numberInputToObject(color);
        }
        this.originalInput = color;
        const rgb = inputToRGB(color);
        this.originalInput = color;
        this.r = rgb.r;
        this.g = rgb.g;
        this.b = rgb.b;
        this.a = rgb.a;
        this.roundA = Math.round(100 * this.a) / 100;
        this.format = opts.format ? ? rgb.format;
        this.gradientType = opts.gradientType;
        // Don't let the range of [0,255] come back in [0,1].
        // Potentially lose a little bit of precision here, but will fix issues where
        // .5 gets interpreted as half of the total, instead of half of 1
        // If it was supposed to be 128, this was already taken care of by `inputToRgb`
        if (this.r < 1) {
            this.r = Math.round(this.r);
        }
        if (this.g < 1) {
            this.g = Math.round(this.g);
        }
        if (this.b < 1) {
            this.b = Math.round(this.b);
        }
        this.isValid = rgb.ok;
    }
    isDark() {
        return this.getBrightness() < 128;
    }
    isLight() {
        return !this.isDark();
    }
    /**
     * Returns the perceived brightness of the color, from 0-255.
     */
    getBrightness() {
        // http://www.w3.org/TR/AERT#color-contrast
        const rgb = this.toRgb();
        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
    }
    /**
     * Returns the perceived luminance of a color, from 0-1.
     */
    getLuminance() {
        // http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
        const rgb = this.toRgb();
        let R;
        let G;
        let B;
        const RsRGB = rgb.r / 255;
        const GsRGB = rgb.g / 255;
        const BsRGB = rgb.b / 255;
        if (RsRGB <= 0.03928) {
            R = RsRGB / 12.92;
        } else {
            // eslint-disable-next-line prefer-exponentiation-operator
            R = Math.pow((RsRGB + 0.055) / 1.055, 2.4);
        }
        if (GsRGB <= 0.03928) {
            G = GsRGB / 12.92;
        } else {
            // eslint-disable-next-line prefer-exponentiation-operator
            G = Math.pow((GsRGB + 0.055) / 1.055, 2.4);
        }
        if (BsRGB <= 0.03928) {
            B = BsRGB / 12.92;
        } else {
            // eslint-disable-next-line prefer-exponentiation-operator
            B = Math.pow((BsRGB + 0.055) / 1.055, 2.4);
        }
        return 0.2126 * R + 0.7152 * G + 0.0722 * B;
    }
    /**
     * Returns the alpha value of a color, from 0-1.
     */
    getAlpha() {
        return this.a;
    }
    /**
     * Sets the alpha value on the current color.
     *
     * @param alpha - The new alpha value. The accepted range is 0-1.
     */
    setAlpha(alpha) {
        this.a = boundAlpha(alpha);
        this.roundA = Math.round(100 * this.a) / 100;
        return this;
    }
    /**
     * Returns whether the color is monochrome.
     */
    isMonochrome() {
        const {
            s
        } = this.toHsl();
        return s === 0;
    }
    /**
     * Returns the object as a HSVA object.
     */
    toHsv() {
        const hsv = rgbToHsv(this.r, this.g, this.b);
        return {
            h: hsv.h * 360,
            s: hsv.s,
            v: hsv.v,
            a: this.a
        };
    }
    /**
     * Returns the hsva values interpolated into a string with the following format:
     * "hsva(xxx, xxx, xxx, xx)".
     */
    toHsvString() {
        const hsv = rgbToHsv(this.r, this.g, this.b);
        const h = Math.round(hsv.h * 360);
        const s = Math.round(hsv.s * 100);
        const v = Math.round(hsv.v * 100);
        return this.a === 1 ? `hsv(${h}, ${s}%, ${v}%)` : `hsva(${h}, ${s}%, ${v}%, ${this.roundA})`;
    }
    /**
     * Returns the object as a HSLA object.
     */
    toHsl() {
        const hsl = rgbToHsl(this.r, this.g, this.b);
        return {
            h: hsl.h * 360,
            s: hsl.s,
            l: hsl.l,
            a: this.a
        };
    }
    /**
     * Returns the hsla values interpolated into a string with the following format:
     * "hsla(xxx, xxx, xxx, xx)".
     */
    toHslString() {
        const hsl = rgbToHsl(this.r, this.g, this.b);
        const h = Math.round(hsl.h * 360);
        const s = Math.round(hsl.s * 100);
        const l = Math.round(hsl.l * 100);
        return this.a === 1 ? `hsl(${h}, ${s}%, ${l}%)` : `hsla(${h}, ${s}%, ${l}%, ${this.roundA})`;
    }
    /**
     * Returns the hex value of the color.
     * @param allow3Char will shorten hex value to 3 char if possible
     */
    toHex(allow3Char = false) {
        return rgbToHex(this.r, this.g, this.b, allow3Char);
    }
    /**
     * Returns the hex value of the color -with a # prefixed.
     * @param allow3Char will shorten hex value to 3 char if possible
     */
    toHexString(allow3Char = false) {
        return '#' + this.toHex(allow3Char);
    }
    /**
     * Returns the hex 8 value of the color.
     * @param allow4Char will shorten hex value to 4 char if possible
     */
    toHex8(allow4Char = false) {
        return rgbaToHex(this.r, this.g, this.b, this.a, allow4Char);
    }
    /**
     * Returns the hex 8 value of the color -with a # prefixed.
     * @param allow4Char will shorten hex value to 4 char if possible
     */
    toHex8String(allow4Char = false) {
        return '#' + this.toHex8(allow4Char);
    }
    /**
     * Returns the shorter hex value of the color depends on its alpha -with a # prefixed.
     * @param allowShortChar will shorten hex value to 3 or 4 char if possible
     */
    toHexShortString(allowShortChar = false) {
        return this.a === 1 ? this.toHexString(allowShortChar) : this.toHex8String(allowShortChar);
    }
    /**
     * Returns the object as a RGBA object.
     */
    toRgb() {
        return {
            r: Math.round(this.r),
            g: Math.round(this.g),
            b: Math.round(this.b),
            a: this.a,
        };
    }
    /**
     * Returns the RGBA values interpolated into a string with the following format:
     * "RGBA(xxx, xxx, xxx, xx)".
     */
    toRgbString() {
        const r = Math.round(this.r);
        const g = Math.round(this.g);
        const b = Math.round(this.b);
        return this.a === 1 ? `rgb(${r}, ${g}, ${b})` : `rgba(${r}, ${g}, ${b}, ${this.roundA})`;
    }
    /**
     * Returns the object as a RGBA object.
     */
    toPercentageRgb() {
        const fmt = (x) => `${Math.round(bound01(x, 255) * 100)}%`;
        return {
            r: fmt(this.r),
            g: fmt(this.g),
            b: fmt(this.b),
            a: this.a,
        };
    }
    /**
     * Returns the RGBA relative values interpolated into a string
     */
    toPercentageRgbString() {
        const rnd = (x) => Math.round(bound01(x, 255) * 100);
        return this.a === 1 ?
            `rgb(${rnd(this.r)}%, ${rnd(this.g)}%, ${rnd(this.b)}%)` :
            `rgba(${rnd(this.r)}%, ${rnd(this.g)}%, ${rnd(this.b)}%, ${this.roundA})`;
    }
    toCmyk() {
        return {
            ...rgbToCmyk(this.r, this.g, this.b),
        };
    }
    toCmykString() {
        const {
            c,
            m,
            y,
            k
        } = rgbToCmyk(this.r, this.g, this.b);
        return `cmyk(${c}, ${m}, ${y}, ${k})`;
    }
    /**
     * The 'real' name of the color -if there is one.
     */
    toName() {
        if (this.a === 0) {
            return 'transparent';
        }
        if (this.a < 1) {
            return false;
        }
        const hex = '#' + rgbToHex(this.r, this.g, this.b, false);
        for (const [key, value] of Object.entries(names)) {
            if (hex === value) {
                return key;
            }
        }
        return false;
    }
    toString(format) {
        const formatSet = Boolean(format);
        format = format ? ? this.format;
        let formattedString = false;
        const hasAlpha = this.a < 1 && this.a >= 0;
        const needsAlphaFormat = !formatSet && hasAlpha && (format.startsWith('hex') || format === 'name');
        if (needsAlphaFormat) {
            // Special case for "transparent", all other non-alpha formats
            // will return rgba when there is transparency.
            if (format === 'name' && this.a === 0) {
                return this.toName();
            }
            return this.toRgbString();
        }
        if (format === 'rgb') {
            formattedString = this.toRgbString();
        }
        if (format === 'prgb') {
            formattedString = this.toPercentageRgbString();
        }
        if (format === 'hex' || format === 'hex6') {
            formattedString = this.toHexString();
        }
        if (format === 'hex3') {
            formattedString = this.toHexString(true);
        }
        if (format === 'hex4') {
            formattedString = this.toHex8String(true);
        }
        if (format === 'hex8') {
            formattedString = this.toHex8String();
        }
        if (format === 'name') {
            formattedString = this.toName();
        }
        if (format === 'hsl') {
            formattedString = this.toHslString();
        }
        if (format === 'hsv') {
            formattedString = this.toHsvString();
        }
        if (format === 'cmyk') {
            formattedString = this.toCmykString();
        }
        return formattedString || this.toHexString();
    }
    toNumber() {
        return (Math.round(this.r) << 16) + (Math.round(this.g) << 8) + Math.round(this.b);
    }
    clone() {
        return new TinyColor(this.toString());
    }
    /**
     * Lighten the color a given amount. Providing 100 will always return white.
     * @param amount - valid between 1-100
     */
    lighten(amount = 10) {
        const hsl = this.toHsl();
        hsl.l += amount / 100;
        hsl.l = clamp01(hsl.l);
        return new TinyColor(hsl);
    }
    /**
     * Brighten the color a given amount, from 0 to 100.
     * @param amount - valid between 1-100
     */
    brighten(amount = 10) {
        const rgb = this.toRgb();
        rgb.r = Math.max(0, Math.min(255, rgb.r - Math.round(255 * -(amount / 100))));
        rgb.g = Math.max(0, Math.min(255, rgb.g - Math.round(255 * -(amount / 100))));
        rgb.b = Math.max(0, Math.min(255, rgb.b - Math.round(255 * -(amount / 100))));
        return new TinyColor(rgb);
    }
    /**
     * Darken the color a given amount, from 0 to 100.
     * Providing 100 will always return black.
     * @param amount - valid between 1-100
     */
    darken(amount = 10) {
        const hsl = this.toHsl();
        hsl.l -= amount / 100;
        hsl.l = clamp01(hsl.l);
        return new TinyColor(hsl);
    }
    /**
     * Mix the color with pure white, from 0 to 100.
     * Providing 0 will do nothing, providing 100 will always return white.
     * @param amount - valid between 1-100
     */
    tint(amount = 10) {
        return this.mix('white', amount);
    }
    /**
     * Mix the color with pure black, from 0 to 100.
     * Providing 0 will do nothing, providing 100 will always return black.
     * @param amount - valid between 1-100
     */
    shade(amount = 10) {
        return this.mix('black', amount);
    }
    /**
     * Desaturate the color a given amount, from 0 to 100.
     * Providing 100 will is the same as calling greyscale
     * @param amount - valid between 1-100
     */
    desaturate(amount = 10) {
        const hsl = this.toHsl();
        hsl.s -= amount / 100;
        hsl.s = clamp01(hsl.s);
        return new TinyColor(hsl);
    }
    /**
     * Saturate the color a given amount, from 0 to 100.
     * @param amount - valid between 1-100
     */
    saturate(amount = 10) {
        const hsl = this.toHsl();
        hsl.s += amount / 100;
        hsl.s = clamp01(hsl.s);
        return new TinyColor(hsl);
    }
    /**
     * Completely desaturates a color into greyscale.
     * Same as calling `desaturate(100)`
     */
    greyscale() {
        return this.desaturate(100);
    }
    /**
     * Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
     * Values outside of this range will be wrapped into this range.
     */
    spin(amount) {
        const hsl = this.toHsl();
        const hue = (hsl.h + amount) % 360;
        hsl.h = hue < 0 ? 360 + hue : hue;
        return new TinyColor(hsl);
    }
    /**
     * Mix the current color a given amount with another color, from 0 to 100.
     * 0 means no mixing (return current color).
     */
    mix(color, amount = 50) {
        const rgb1 = this.toRgb();
        const rgb2 = new TinyColor(color).toRgb();
        const p = amount / 100;
        const rgba = {
            r: (rgb2.r - rgb1.r) * p + rgb1.r,
            g: (rgb2.g - rgb1.g) * p + rgb1.g,
            b: (rgb2.b - rgb1.b) * p + rgb1.b,
            a: (rgb2.a - rgb1.a) * p + rgb1.a,
        };
        return new TinyColor(rgba);
    }
    analogous(results = 6, slices = 30) {
        const hsl = this.toHsl();
        const part = 360 / slices;
        const ret = [this];
        for (hsl.h = (hsl.h - ((part * results) >> 1) + 720) % 360; --results;) {
            hsl.h = (hsl.h + part) % 360;
            ret.push(new TinyColor(hsl));
        }
        return ret;
    }
    /**
     * taken from https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js
     */
    complement() {
        const hsl = this.toHsl();
        hsl.h = (hsl.h + 180) % 360;
        return new TinyColor(hsl);
    }
    monochromatic(results = 6) {
        const hsv = this.toHsv();
        const {
            h
        } = hsv;
        const {
            s
        } = hsv;
        let {
            v
        } = hsv;
        const res = [];
        const modification = 1 / results;
        while (results--) {
            res.push(new TinyColor({
                h,
                s,
                v
            }));
            v = (v + modification) % 1;
        }
        return res;
    }
    splitcomplement() {
        const hsl = this.toHsl();
        const {
            h
        } = hsl;
        return [
            this,
            new TinyColor({
                h: (h + 72) % 360,
                s: hsl.s,
                l: hsl.l
            }),
            new TinyColor({
                h: (h + 216) % 360,
                s: hsl.s,
                l: hsl.l
            }),
        ];
    }
    /**
     * Compute how the color would appear on a background
     */
    onBackground(background) {
        const fg = this.toRgb();
        const bg = new TinyColor(background).toRgb();
        const alpha = fg.a + bg.a * (1 - fg.a);
        return new TinyColor({
            r: (fg.r * fg.a + bg.r * bg.a * (1 - fg.a)) / alpha,
            g: (fg.g * fg.a + bg.g * bg.a * (1 - fg.a)) / alpha,
            b: (fg.b * fg.a + bg.b * bg.a * (1 - fg.a)) / alpha,
            a: alpha,
        });
    }
    /**
     * Alias for `polyad(3)`
     */
    triad() {
        return this.polyad(3);
    }
    /**
     * Alias for `polyad(4)`
     */
    tetrad() {
        return this.polyad(4);
    }
    /**
     * Get polyad colors, like (for 1, 2, 3, 4, 5, 6, 7, 8, etc...)
     * monad, dyad, triad, tetrad, pentad, hexad, heptad, octad, etc...
     */
    polyad(n) {
        const hsl = this.toHsl();
        const {
            h
        } = hsl;
        const result = [this];
        const increment = 360 / n;
        for (let i = 1; i < n; i++) {
            result.push(new TinyColor({
                h: (h + i * increment) % 360,
                s: hsl.s,
                l: hsl.l
            }));
        }
        return result;
    }
    /**
     * compare color vs current color
     */
    equals(color) {
        const comparedColor = new TinyColor(color);
        /**
         * RGB and CMYK do not have the same color gamut, so a CMYK conversion will never be 100%.
         * This means we need to compare CMYK to CMYK to ensure accuracy of the equals function.
         */
        if (this.format === 'cmyk' || comparedColor.format === 'cmyk') {
            return this.toCmykString() === comparedColor.toCmykString();
        }
        return this.toRgbString() === comparedColor.toRgbString();
    }
}